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On the construction of perfect codes from HEX signal constellations
(Pergamon-Elsevier B.V. Ltd, 2012-12-01)
Recently, minimum and non-minimum delay perfect codes were proposed for any channel of dimension n. Their construction appears in the literature as a subset of cyclic division algebras over Q(zeta(3)) only for the dimension ...
Hyperbolic Geometrically Uniform Codes and Ungerboeck Partitioning on the Double Torus
(2022-03-01)
Current research builds labelings for geometrically uniform codes on the double torus through tiling groups. At least one labeling group was provided for all of the 11 regular tessellations on the double torus, derived ...
On the construction of perfect codes from HEX signal constellations
(Pergamon-Elsevier B.V. Ltd, 2014)
Lattice constellations and codes from quadratic number fields
(2001-05-01)
We propose new classes of linear codes over integer rings of quadratic extensions of Q, the field of rational numbers. The codes are considered with respect to a Mannheim metric, which is a Manhattan metric modulo a ...
Lattice constellations and codes from quadratic number fields
(2001-05-01)
We propose new classes of linear codes over integer rings of quadratic extensions of Q, the field of rational numbers. The codes are considered with respect to a Mannheim metric, which is a Manhattan metric modulo a ...
Modulação quantizada para sistemas com codificação wavelet sujeitos ao desvanecimento rayleigh
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2009-03-12)
Wavelet coding is an efficient technique to overcome the multipath fading effects, which are characterized by fluctuations in the intensity of the transmitted signals over wireless channels. Since the wavelet symbols are ...
Lattice constellations and codes from quadratic number fields
(Ieee-inst Electrical Electronics Engineers IncPiscatawayEUA, 2001)
Accuracy assessment of Precise Point Positioning with multi-constellation GNSS data under ionospheric scintillation effects
(2018-01-01)
GPS and GLONASS are currently the Global Navigation Satellite Systems (GNSS) with full operational capacity. The integration of GPS, GLONASS and future GNSS constellations can provide better accuracy and more reliability ...